지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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In Trachelomonas hispida, the adult envelope that surrounds the monad is oval in shape and covered with spines. Development of the lorica is an interesting, but poorly known phenomenon. We observed in detail the formation of spineless envelopes of T. hispida using light microscopy and scanning electron microscopy. The results showed that young cells formed delicate and net-like envelopes. The structure changed with age, and mature specimens had solid, thick loricae with small pores. As the loricae aged, they changed their shape, and rope-like fibres from the external layer started to unwind, progressing from the apical pore, exposing the underlying net-like structure. X-ray spectrometry showed that Fe was the major mineral component in young and mature loricae, whereas old loricae did not contain Fe salts, although they did contain a high number of Mn compounds. We also noticed a different pattern of mineralization process in the envelopes. Apart from the even distribution of mineral deposition over the entire lorica, we observed that it started from the apical pore and ended at the posterior end. There was considerable morphological variation in envelope shape and ornamentation, which had collars and folds around the apical pore and process at the posterior end. This suggested that many varieties of T. hispida should be taxonomically reappraised. We also discuss a hypothetical role for the spines on lorica surfaces in aquatic ecosystems.
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참고문헌 (55)
참고문헌 신청
Bilan, MI. / 2001 / Polysaccharides of calcareous algae and their effect on the calcification process / Russ J Bioorg Chem 27:2~16
Bozzola, JJ. / 1995 / Electron microscopy: principles and techniques for biologists / Jones and Bartlett :542
Brosnan, S. / 2005 / Morphological separation of the euglenoid genera Trachelomonas and Strombomonas (Euglenophyta) based on lorica development and posterior strip reduction / J Phycol 41:590~605
Conforti, V. / 1999 / A taxonomic and ultrastructural study of Trachelomonas Ehr. (Euglenophyta) from subtropical Argentina / Cryptogam Algol 20:167~207
Conforti, V. / 2010 / Ultrastructure of the lorica of species (Euglenophyta) from New Jersey, USA / Algol Stud 135:15~40
Bozzola, JJ. / 1995 / Electron microscopy: principles and techniques for biologists / Jones and Bartlett :542
Brosnan, S. / 2005 / Morphological separation of the euglenoid genera Trachelomonas and Strombomonas (Euglenophyta) based on lorica development and posterior strip reduction / J Phycol 41:590~605
Conforti, V. / 1999 / A taxonomic and ultrastructural study of Trachelomonas Ehr. (Euglenophyta) from subtropical Argentina / Cryptogam Algol 20:167~207
Conforti, V. / 2010 / Ultrastructure of the lorica of species (Euglenophyta) from New Jersey, USA / Algol Stud 135:15~40
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